they're handy
I've got a one ton bucket truck with a 9000 lb winch that I use for pulling over trees, getting unstuck in the mud, straightening up small trees leaning from hurricanes, and dragging felled trees out of lakes and up the bank. Recently I got my GMC C7500 bucket truck stuck in a mudhole and thought I was done for.
I went home and got the truck with the winch, pulled it up against the curb, raised the stuck side of the big truck up with the outrigger, packed 2 x 8's underneath the tires, and pulled it right out.
That day I swore to get one installed on every truck as I can afford to do so. They're handy.